Simon Willison’s Weblog

How Regexes Work (via) They’re just simplified syntax for constructing a state machine

Posted 25th November 2003 at 12:27 am

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Talking AI and jobs with Natasha Zouves for News Nation - 30th May 2025
Large Language Models can run tools in your terminal with LLM 0.26 - 27th May 2025
Highlights from the Claude 4 system prompt - 25th May 2025

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